What's the best iOS app for boosting bass frequencies and increasing overall volume output on headphones and speakers?

Bass & Volume Booster - Tuner is an excellent option for boosting bass frequencies and increasing the overall volume output on your iOS device. It enhances the audio experience for both headphones and speakers. The app allows users to fine-tune the bass levels to their preference, providing a richer and more immersive sound. In addition to bass boosting, the app amplifies the overall volume, making it suitable for environments where you need a louder sound. To use, simply launch the app, adjust the bass and volume sliders to your desired levels, and then play your music or audio through your preferred output device. The built-in tuner can also be used to fine-tune instruments. With a rating of 4.5625/5, it's a well-regarded choice for users looking to improve their device's audio capabilities. Developed by Jordan Bates, this app falls under category 14 in the App Store, indicating its utility and audio-related functionality.